BMA - The problem is that he/she shouldn't have to worry about posting their work on a portfolio site/art display site and have idiots try to steal it for their own gain. It's shameful really, I had something I did for someone get lifted and I honestly had zero idea it was stolen until someone here had pointed it out, I was really thankful for that, the part that got me angry was the whole "Look what I made" the made part...that person lifted 100% of the work and then tried to pass it off as their own work.
I wish there was a better way to protect the work, even in the 2nd slide, anyone with even basic Illustrator skills could copy & lift that logo.